[Biturbos4] Lack of heat in B5 series car - any thoughts?

Ti Kan ti at amb.org
Thu Jan 17 17:51:33 PST 2008

Go to the "Auto HVAC" controller, and then under lower right side of
the window, under "Advanced functions" there should be a button
"Output tests".  Click it and then click "Start/Next" to step through
the series of built-in self tests.


Grant Lenahan writes:
> I used Vag-com to pull codes, but don't know how to go beyond that.   
> Do you have a pointer to any instructions?
> Thanks, much,
> Grant
> On Jan 17, 2008, at 7:23 PM, Ti Kan wrote:
> > Before flushing the heater core or blindly replacing any parts,
> > I suggest using VAG-COM and doing an output test on the climate
> > control.  It will exercise all the flaps, the blower, and other
> > parts and hopefully would bring to light what is at fault.
> >
> > -Ti

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